2004 Buick Rendezvous Owner's Manual - Page 97

Battery Replacement Under normal use, the battery in your remote keyless entry transmitter should last about three years. 1. Insert a flat object, such as a coin, into the slot on the side of the transmitter and twist to separate the halves. 2. Gently pry the battery out of the transmitter. Do not use the metal flanges to "pop out" the battery. 3. Replace the battery. 4. Reassemble the transmitter. Make sure the halves are snapped together tightly so water will not get in. 5. Press and hold the LOCK and UNLOCK buttons for seven seconds to synchronize the transmitter. United States Canada 6. Check the transmitter operation. You can tell the battery is weak if the KEY FOB BATTERY LOW message appears in the message center. If you get this message, the battery in the key fob needs to be replaced. Notice: When replacing the battery, use care not to touch any of the circuitry. Static from your body transferred to these surfaces may damage the transmitter. 2-7